I don't have the study linked on this phone but the university of Utah has proven that the fuller spectrum of cmh 315 and the uv it includes does make gains in plant growth and vigor which is why yield can be higher with fuller spectrum.
Yeah I've read it. So 4% of 26 is 1.02%
No. The cob and HPS weed was 18% and the cmh weed was 22%
interesting to hear an led grower talk about non agenda based evidence. but you clearly have not looked too hard since there are plenty of studies out there. I never heard anyone claim more than 1gpw before the led crowd came along and you had to be an expert grower to get that but then there are so many false and misleading claims about LEDs it's hard to believe anything you here. the CLW uses old technology and is no mare effiecient that the viparspectra or other inexpensive grow lights. the only difference is the inclusion of T8 UV bulbs in the CLW. sunlight is full spectrum light and plants grown in natural sunlight have better taste and potency than plants grown indoors. the 2% increase you claim would not be noticeable but many people notice a difference with full spectrum (cmh,fluorescent or enhanced spectrum HPS) lights. the LED makers have always claimed that plants don't need what LEDs can't produce efficiently.even the aquarium crowd only uses LEDs for visual effects and fluorescent or MH for plant growth. the major LED makes ( cree, samsung. bridgelux) have given up on developing horticultural LEDs. with no new development LEDs may become another passing fad.even as structural lighting many people as well as the US air force and navy are finding that they don't live up to the claims of LED makers. 60% of the LED light bulbs in my home have failed withing 6 month so i'm going back to CFLs to light my home
could not find that study. by 4% do they mean 4% of the 18% average THC content or an increase to 22%? the first would not be noticeable but the second would be and most people do notice the improvement
You're referencing the 2015 models of CLW. The SS 550 use the most recient ssl80 leds and regardless of any efficiency numbers all 3 400w lights pulled about a pound each so they do just fine for 1$ a watt.
Yeah. A lot of bro science. I'm just going off the results we have from my friend adopting my leds over hps. I prob won't grow again for years......so it will be interesting to see what is legit when I'm growing again. Until then I'll post my friends grows with the leds. He's expecting 6+lbs in the next grow or two. Last one under cobs was above 5 which is more than his 2600w SE hids were pulling for the veg time and he's happy. Other than needing a space heater now..... ohh he complains that the CLW SS550 cords are too short and fall out easily.
more like $2 per watt plus tax and shipping https://californialightworks.com/product/solar-system-550/ a lot of money for a light that can't beat CMH lightsYou're referencing the 2015 models of CLW. The SS 550 use the most recient ssl80 leds and regardless of any efficiency numbers all 3 400w lights pulled about a pound each so they do just fine for 1$ a watt.
I've ran all leds in my homes.....but I've bought the high dollar ones at HD and lowes and since spending the money to go all led in my homes back in 2012 I've not had 1 failure and my electricity bill when I'm not growing is quite nice. So maybe you cheaped out on the leds you bought or god doesn't love you as much as me.
Yeah. But I paid 400$ or $1200 for 3 and 100$ for the controller.
Are you installing them with a hammer?
I imagine he got the discount led lights off eBay or amazon. I just hope my tenants don't steal them when they move out. I actually have them as accountable on a list.
That's about the gimmicky gist of it, more than likely 200 x 3w LED's, depending on how they are being driven they are probably pulling 200 - 300 watts at the wall.
Mars and most pannel leds are in the 20s on efficiency. They propagate that the colors they use effect the plant more. So that's why a lot say crazy ass numbers. They're using hypothetical values.
Guessing you mean Induction lamp... Good tech but you would need to pull equivalent HID wattage in order to keep up in terms of yield, although I found quality was better using induction, the let down was Chinese crappy ballasts and weak application of the Phosphor coatings (had some where the coating fell off) poor manufacturing being the weak points here.
Wow that is seriously crap and way worse than I imagined lol... Those panels are overpriced to the max
I would have to search you tube for the grower vid. It is 2 parts and the guys wear tyvec suits. First part is mostly them checking out the plants and then trimming them. 2nd vid is the owner testing with the gas chromatograph.
The Guy is John Berfelo he isn't exactly a scientist in a real lab but seems to have his stuff togeather the video is here
google search indicates that Phillips 3100 is a high cri metal halide bulb. life expectancy and output are the same as a CMH bulb. the 4200k cmh seem to have a more balanced spectrum but phytochrome responds to a wide spectrum of orange and red light and chlorophyll A actually emits deep red light when exposed to violet light apparently the S2 to S1 transition drives photosynthesis and the energy for S1 to ground state is waste emitted in the form of light. apparently deep red is only needed in large amounts if you light can't produce violet light
how can all 3 bulbs have the correct spectrum for cannabis when they all have radically different SPDs?COBs produce a very narrow spectrum of blue light and plants use broad spectrum blue light. video was interesting but a little long winded.sunlight only contains 0.15% UV-B and UV-B damages plants and slows growth. UV-A increases THC content without slowing growth or damaging plant but LEDs can not produce UV-A or violet light efficiently so bulbs would need to be added to a COB to get the best flavor and potency and mixing bulbs and LEDS can be a bit of a nightmare since T5s need to be much closer to the plant and LEDs need to be farther away to prevent burning.wonder if he used enhanced spectrum horticultural HPS bulbs in his test or just standard street lights